Buggy code:
public class AsmRelationshipProvider { protected static AsmRelationshipProvider INSTANCE = new AsmRelationshipProvider ( ) ; public static final String ADVISES = "advises" ; public static final String ADVISED_BY = "advised<seq2seq4repair_space>by" ; public static final String DECLARES_ON = "declares<seq2seq4repair_space>on" ; public static final String DECLAREDY_BY = "declared<seq2seq4repair_space>by" ; public static final String SOFTENS = "softens" ; public static final String SOFTENED_BY = "softened<seq2seq4repair_space>by" ; public static final String MATCHED_BY = "matched<seq2seq4repair_space>by" ; public static final String MATCHES_DECLARE = "matches<seq2seq4repair_space>declare" ; public static final String INTER_TYPE_DECLARES = "declared<seq2seq4repair_space>on" ; public static final String INTER_TYPE_DECLARED_BY = "aspect<seq2seq4repair_space>declarations" ; public static final String ANNOTATES = "annotates" ; public static final String ANNOTATED_BY = "annotated<seq2seq4repair_space>by" ; public void checkerMunger ( IHierarchy model , Shadow shadow , Checker checker ) { } public void addRelationship ( ResolvedType onType , ResolvedTypeMunger munger , ResolvedType originatingAspect ) { if ( ! ( AsmManager . isCreatingModel ( ) ) ) return ; String sourceHandle = "" ; <START_BUG> if ( ( munger . getSourceLocation ( ) ) != null ) { <END_BUG> sourceHandle = AsmManager . getDefault ( ) . getHandleProvider ( ) . createHandleIdentifier ( munger . getSourceLocation ( ) . getSourceFile ( ) , munger . getSourceLocation ( ) . getLine ( ) , munger . getSourceLocation ( ) . getColumn ( ) , munger . getSourceLocation ( ) . getOffset ( ) ) ; } else { sourceHandle = AsmManager . getDefault ( ) . getHandleProvider ( ) . createHandleIdentifier ( originatingAspect . getSourceLocation ( ) . getSourceFile ( ) , originatingAspect . getSourceLocation ( ) . getLine ( ) , originatingAspect . getSourceLocation ( ) . getColumn ( ) , originatingAspect . getSourceLocation ( ) . getOffset ( ) ) ; } if ( ( originatingAspect . getSourceLocation ( ) ) != null ) { String targetHandle = AsmManager . getDefault ( ) . getHandleProvider ( ) . createHandleIdentifier ( onType . getSourceLocation ( ) . getSourceFile ( ) , onType . getSourceLocation ( ) . getLine ( ) , onType . getSourceLocation ( ) . getColumn ( ) , onType . getSourceLocation ( ) . getOffset ( ) ) ; IRelationshipMap mapper = AsmManager . getDefault ( ) . getRelationshipMap ( ) ; if ( ( sourceHandle != null ) && ( targetHandle != null ) ) { IRelationship foreward = mapper . get ( sourceHandle , DECLARE_INTER_TYPE , AsmRelationshipProvider . INTER_TYPE_DECLARES , false , true ) ; foreward . addTarget ( targetHandle ) ; IRelationship back = mapper . get ( targetHandle , DECLARE_INTER_TYPE , AsmRelationshipProvider . INTER_TYPE_DECLARED_BY , false , true ) ; back . addTarget ( sourceHandle ) ; } } } public void addDeclareParentsRelationship ( ISourceLocation decp , ResolvedType targetType , List newParents ) { } public void addDeclareAnnotationRelationship ( ISourceLocation declareAnnotationLocation , ISourceLocation annotatedLocation ) { } public void adviceMunger ( IHierarchy model , Shadow shadow , ShadowMunger munger ) { } protected IProgramElement getNode ( IHierarchy model , Shadow shadow ) { } private boolean sourceLinesMatch ( ISourceLocation loc1 , ISourceLocation loc2 ) { } private IProgramElement findOrCreateCodeNode ( IProgramElement enclosingNode , Member shadowSig , Shadow shadow ) { } protected IProgramElement lookupMember ( IHierarchy model , Member member ) { } protected IProgramElement findMemberInClass ( IProgramElement classNode , Member member ) { } public static AsmRelationshipProvider getDefault ( ) { } public static void setDefault ( AsmRelationshipProvider instance ) { } public void addDeclareAnnotationRelationship ( ISourceLocation sourceLocation , String typename , Method method ) { } public void addDeclareAnnotationRelationship ( ISourceLocation sourceLocation , String typename , Field field ) { } }

Fix:
if ( ( ( munger . getSourceLocation ( ) ) != null ) && ( ( munger . getSourceLocation ( ) . getOffset ( ) ) != ( - 1 ) ) ) {